I like flatt-er UI in general, but I don't like it when it goes so far out of its way that it removes all affordances. For instance, a button is easily recogni

I like flatt-er UI in general, but I don't like it when it goes so far out of its way that it removes all affordances. For instance, a button is easily recognizable by its shape. We all know they can be clicked. Some flat designs have buttons that look absolutely no different than a label. Worse yet, sometimes they don't even have hover effects. When the only way I can find out if something is clickable is by trying to press it, something's seriously wrong. When there are clickable things in my view that I don't realize are clickable until much much later, something's wrong. Go flat, but leave the affordances alone. There's a difference between throwing everything out that's not needed and throwing everything out.